<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    body {
      text-align: center;
    }
  </style>
</head>
<body>
<h1>修改商品页面</h1>
<form action="/update">
  <input type="text" name="id" placeholder="修改商品ID"><br>
  <input type="text" name="title" placeholder="修改商品名称"><br>
  <input type="text" name="price" placeholder="修改商品价格"><br>
  <input type="text" name="num" placeholder="修改商品库存"><br>
  <input type="submit" value="修改">
</form>
</body>
</html>